Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Track PV_REFERENCED bit as for PV_MODIFIED, to make mdsetimage work correctly. 

Compatiblity with Mach VM: clear pmap-private bits in pmap_remove() if !UVM.
This commit is contained in:
jonathan 1998-12-05 09:13:09 +00:00
parent aecf708ee3
commit 340efce0ea
1 changed files with 27 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
sys/arch/mips/mips/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.45 1998/12/05 07:50:12 jonathan Exp $ */
/* $NetBSD: pmap.c,v 1.46 1998/12/05 09:13:09 jonathan Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -78,7 +78,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.45 1998/12/05 07:50:12 jonathan Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.46 1998/12/05 09:13:09 jonathan Exp $");
/*
* Manages physical address maps.
@ -743,10 +743,10 @@ pmap_remove(pmap, sva, eva)
#endif /* mips3 */
}
#ifdef notanymore
#if !defined(UVM)
if (PAGE_IS_MANAGED(pfn_to_vad(entry)))
*pa_to_attribute(pfn_to_vad(entry)) &=
~PV_MODIFIED;
~(PV_MODIFIED|PV_REFERENCED);
#endif
@ -802,10 +802,10 @@ pmap_remove(pmap, sva, eva)
#endif /* mips3 */
}
#ifdef notanymore
#if !defined(UVM)
if (PAGE_IS_MANAGED(pfn_to_vad(entry)))
*pa_to_attribute(pfn_to_vad(entry)) &=
~PV_MODIFIED;
~(PV_MODIFIED|PV_REFERENCED);
#endif
pte->pt_entry = mips_pg_nv_bit();
/*
@ -1677,14 +1677,12 @@ void
pmap_clear_reference(pa)
vm_offset_t pa;
{
#ifdef DEBUG
if (pmapdebug & PDB_FOLLOW)
printf("pmap_clear_reference(%lx)\n", pa);
#endif
#ifdef PMAP_REFERENCE
*pa_to_attribute(pa) &= ~PMAP_ATTR_REF;
#endif
if (PAGE_IS_MANAGED(pa))
*pa_to_attribute(pa) &= ~PV_REFERENCED;
}
/*
@ -1697,10 +1695,26 @@ boolean_t
pmap_is_referenced(pa)
vm_offset_t pa;
{
#ifdef PMAP_REFERENCE
return (*pa_to_attribute(pa) & PMAP_ATTR_REF);
#else
#if defined(UVM)
if (PAGE_IS_MANAGED(pa))
return (*pa_to_attribute(pa) & PV_REFERENCED);
#ifdef DEBUG
else
printf("pmap_is_referenced: pa %lx\n", pa);
#endif
#endif
return (FALSE);
}
void
pmap_set_referenced(pa)
vm_offset_t pa;
{
if (PAGE_IS_MANAGED(pa))
*pa_to_attribute(pa) |= PV_MODIFIED;
#ifdef DEBUG
else
printf("pmap_set_referenced(%lx)\n", pa);
#endif
}